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The liver can store vitamin B12 for up to 12 months, providing a significant reserve

Trends in Endocrinology and Metabolism (2017) 7

Seniors may be predisposed to vitamin B12 deficiency, especially if they suffer from health conditions

PMID 35313269

[3] Patients with deficiencies often experience fatigue, cognitive or nerve impairments, and slow recovery

Research suggests it promotes fat loss while preserving lean mass, which aligns well with Retatrutides metabolic profile
